Improvement in compositions for roofs, pavements



' 4 UNITED STATEs PATENT OFFICE.

SAMUEL Gr. MORRISON, OF WILLIAMSPORT, PENNSYLVANIA.

IMPROVEMENT IN COMPOSITIONS FOR ROOFS, PAVEMENTS, &c.

Specification forming part of Letters Patent No. 117,196, dated July 18, 1871.

Verize it as fine as possible; then mix the flour into the tar in such proportion as to make a cement of any desired consistence for the purpose intended.

I claim as my invention The use of iron carbon (black-band ore) pulverized, as a drier, when mixed With gas or coaltar for cement, for the purposes aforesaid.

S. G. MORRISON.

Witnesses:

HEPBURN McOLURE,

SAMUEL CRAWFORD. 

